[R] Convergence problem

David Winsemius dwinsemius at comcast.net
Tue Feb 18 19:09:06 CET 2014

On Feb 18, 2014, at 9:47 AM, Amanuel Tekleab wrote:

> Hi all,
> I am a facing a convergence problem when I test for variability of a slope
> among groups in lme.
> a) How do I know how many iterations the program is running?
> b) How do I increase the # of iterations
> c) Do I include the command to increase iterations in my equation?

There seems to be consensus among authors of iterative routines in R to issue control parameters to functions in lists with names like "control". Looking at the help page for 'lme' suggests its authors have followed that pattern. This is a question that would get a wider audience of knowledgeable minds regarding lme and cousins if it were directed to the sig-ME mailing list.

> Thanks for your help!
> Amanuel
> -- 
> Amanuel G. Tekleab, Ph.D.
> Associate Professor of Organizational Behavior
> School of Business Administration
> Wayne State University
> 304 Prentis Bldg.
> Detroit, MI 48202
> Phone: 313-577-9211
> Fax: 313-577-5486
> 	[[alternative HTML version deleted]]
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David Winsemius
Alameda, CA, USA

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